Yes, there is a pass code you can set which can be up to 16 digits long. All settings, general, security settings, security, turn on screen lock, type in pin and confirm. This will have to be typed in each time you wake up your nook hd+. If you have kid profiles set up on the nook they would not need to type in this code if they are going into "their" profile, only to go out of their profile, but other adult profiles would have to type it in to go into their profile. Only one pass code can be set up per nook.